package cn.net.greenet.traffic.flow.group;

import cn.net.greenet.common.db_service.BaseDao;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;

/**
 * 查询区域组合区域ID的对应关系
 *
 * @author liangdelin
 */
@WebServlet(name = "Query_Areas", urlPatterns = {"/traffic_flow/query_areas"})
public class Query_Areas extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String json = request.getParameter("json");
            JSONObject jo = JSONObject.fromObject(json);
            int group_id = Integer.parseInt(jo.getString("group_id"));
            String group_name = "";
            BaseDao baseDao = new BaseDao();
            ResultSet rs = baseDao.executeSQL("select group_name from traffic_flow_group_area where id = ?", new Object[]{group_id});
            while (rs.next()) {
                group_name = rs.getString("group_name");
            }
            JSONObject joo = new JSONObject();
            joo.put("group_name", group_name);
            out.println(joo.toString());
            out.flush();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            out.close();
        }

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
